Celebrity Adventurer and Explorer Mungo Park has vanished. It’s 1805 and his disappearance is big news back in England. A rescue mission is put together under the direction of Africa Society director Joseph Langley. Langley and his team trace Park’s route, sailing up the Gambia and crossing the jungle to get to the Niger. At the legendary city of Tellem, dozens of Africans emerge from their mud homes and walk towards the Englishmen with a peculiar, stiff-legged gait, grimacing like flesh-hungry zombies, an entire village transformed…..